Answer :
Final answer:
The type of face and head protection that supplies fresh air to a welder in a hazardous breathing environment is a respirator. Welding helmets, goggles, and safety glasses do not supply fresh air but defend against sparks and radiation.The correct answer is b) respirator
Explanation:
The question asks which of the following types of face and head protection supply fresh air to a welder in a hazardous breathing environment. The correct answer is a respirator. Welding helmets, welding goggles, and safety glasses provide protection against sparks, intense light, and infrared or ultraviolet radiation but do not supply fresh air.
A respirator is designed to protect the wearer from inhaling harmful dusts, fumes, vapors, or gases. For welders working in environments with insufficient oxygen or where hazardous substances might be present in the air, respirators that supply fresh or filtered air are essential for the protection of the welder's respiratory system.
Additionally, it's important to choose the right type of respirator based on the specific hazards of the environment, which might be determined by standards such as Immediately Dangerous to Life or Health (IDLH), Short Term Exposure Limits (STELs), and Biological Exposure Indices (BEIS).
Fresh air supply to a welder in a hazardous breathing environment is provided by a respirator. This equipment ensures that the welder has access to clean, breathable air while working in conditions where normal air quality is compromised.
